:root{--bg:#f6f7f9;--surface:#ffffff;--border:#e2e5ea;--text:#1c2024;--muted:#667085;--primary:#3452ff;--primary-hover:#2740d6;--danger:#d92d20;--success:#0e9f6e;--radius:10px;--shadow:0 1px 2px rgba(16,24,40,0.06),0 1px 3px rgba(16,24,40,0.1)}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.site-header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;background:var(--surface);border-bottom:1px solid var(--border)}.brand{font-weight:700;font-size:18px;color:var(--text)}.brand:hover{text-decoration:none}.container{max-width:960px;margin:0 auto;padding:32px 24px 80px}.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:24px}h1{font-size:26px;margin:0 0 4px}h2{font-size:20px;margin:0 0 12px}.muted{color:var(--muted);font-size:14px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.card+.card{margin-top:16px}.quiz-list{display:grid;grid-gap:12px;gap:12px}.quiz-row{display:flex;justify-content:space-between;gap:16px}.btn,.quiz-row{align-items:center}.btn{display:inline-flex;gap:8px;border:1px solid transparent;border-radius:8px;padding:9px 14px;font-size:14px;font-weight:600;cursor:pointer;background:var(--primary);color:#fff;transition:background .15s ease}.btn:hover{background:var(--primary-hover);text-decoration:none}.btn.secondary{background:var(--surface);border-color:var(--border);color:var(--text)}.btn.secondary:hover{background:#f2f4f7}.btn.danger{background:transparent;border-color:transparent;color:var(--danger)}.btn.danger:hover{background:#fef3f2}.btn:disabled{opacity:.6;cursor:not-allowed}.btn.small{padding:6px 10px;font-size:13px}.field{margin-bottom:16px}.field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}input[type=number],input[type=password],input[type=text],select,textarea{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;background:#fff;color:var(--text)}input[type=number]:focus,input[type=password]:focus,input[type=text]:focus,select:focus,textarea:focus{outline:2px solid rgba(52,82,255,.25);border-color:var(--primary)}textarea{resize:vertical;min-height:72px}.options-editor{display:grid;grid-gap:8px;gap:8px;margin-top:8px}.option-row{display:flex;align-items:center;gap:10px}.option-row input[type=text]{flex:1 1}.option-row input[type=checkbox],.option-row input[type=radio]{width:18px;height:18px;accent-color:var(--primary);flex:none}.option-actions{display:flex;gap:4px;flex:none}.icon-btn{border:1px solid var(--border);background:#fff;border-radius:6px;width:30px;height:30px;cursor:pointer;font-size:14px;line-height:1;color:var(--muted)}.icon-btn:hover{background:#f2f4f7;color:var(--text)}.icon-btn:disabled{opacity:.4;cursor:not-allowed}.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600;background:#eef1ff;color:var(--primary);white-space:nowrap}.badge.ranked{background:#fff3e6;color:#b54708}.badge.multiple{background:#e8f6ef;color:var(--success)}.badge.single{background:#eef1ff;color:var(--primary)}.question-item{border:1px solid var(--border);border-radius:var(--radius);padding:16px;background:var(--surface)}.question-item+.question-item{margin-top:12px}.question-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.question-prompt{font-weight:600;margin:0 0 4px}.option-list{list-style:none;margin:10px 0 0;padding:0;display:grid;grid-gap:4px;gap:4px}.option-list li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}.option-list li.correct{color:var(--success);font-weight:600}.option-index{width:22px;text-align:right;flex:none}.error{color:var(--danger);font-size:14px;margin:8px 0}.empty{text-align:center;padding:40px 20px;color:var(--muted)}.form-actions{display:flex;gap:10px;margin-top:8px}.hint{font-size:13px;color:var(--muted);margin-top:4px}.toolbar{display:flex;gap:10px;margin-bottom:16px}.row-between{display:flex;align-items:center;justify-content:space-between;gap:16px}.hero{text-align:center;padding:32px 24px}.rank-row{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px solid var(--border)}.rank-row:last-child{border-bottom:none}.rank-row .pos{width:22px;text-align:right;color:var(--muted);flex:none}table.grid{width:100%;border-collapse:collapse;font-size:14px}table.grid td,table.grid th{text-align:left;padding:9px 12px;border-bottom:1px solid var(--border);white-space:nowrap}table.grid th{color:var(--muted);font-weight:600}table.grid tbody tr:last-child td{border-bottom:none}.score-bar{height:8px;width:100%;background:#eef1f5;border-radius:999px;overflow:hidden}.score-fill{height:100%;background:var(--primary);border-radius:999px;transition:width .2s ease}.pct{flex:none;width:54px;text-align:right;font-size:13px;font-weight:600;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.score-cell{display:flex;align-items:center;gap:10px;min-width:150px}@media (max-width:640px){.container{padding:20px 16px 64px}.site-header{padding:12px 16px;flex-wrap:wrap;gap:8px 12px}h1{font-size:22px}h2{font-size:18px}.page-head,.quiz-row,.row-between{flex-wrap:wrap}input[type=number],input[type=password],input[type=text],select,textarea{font-size:16px}.icon-btn{width:36px;height:36px}.btn{padding:11px 16px}table.grid td,table.grid th{padding:8px 10px}}